6 990 901 Exponent Status

Great Internet Mersenne Prime Search
GIMPS
Finding World Record Primes Since 1996

PrimeNet Exponent Status

M_n

Status

Details

Factored

Factor	Digits	Bits	Date
2500357564054065178951	22	71.1	2012-09-13 09:13:26

ECM

Digits	B1	Curves
25	50000	2 / 280

Estimated T-Level: 20.0 ⓘ

TF below 2^62 is very unlikely to find new factors due to ECM effort.

Status	Date	User	Residue	Shift
Bad		Paul Victor Novarese	E9C272A7BF8F1C34	0
Verified (Factored)	2000-03-01	Stephen Scott	C7E2F7991046E2A9	4096937
Verified (Factored)	2002-04-20	Ing. Pavel PaJaSoft Janousek	C7E2F7991046E2A9	6048698

Status	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified	2018-01-30	Oliver Kruse	1A0A0FAFAD3CDFFE	1	3468253	5	3
Verified	2019-02-26	Yizhe Huang	1A0A0FAFAD3CDFFE	1	5115476	5	3

History

Date	User	Type	Result
2019-02-26	Yizhe Huang	C-PRP	M6990901/2500357564054065178951 : 1A0A0FAFAD3CDFFE PRP: Verified PRP without proof (not generated)
2018-01-30	Oliver Kruse	C-PRP	M6990901/2500357564054065178951 : 1A0A0FAFAD3CDFFE PRP: Verified PRP without proof (not generated)
2012-09-13	ATH	F-ECM	Factor: 2500357564054065178951
2011-12-12	James Heinrich	NF-PM1	B1=135000, B2=2835000, E=6